摘要
铝合金薄壁壳体件是航空航天及兵器工业上广泛采用的零件,但其制造工艺却长期得不到有效解决。文章采用Anycasting和DEFORM-3D软件,分别对充型阶段的凝固和塑性变形阶段进行了计算,并通过复合加载保证了零件使用性能上的要求。结果表明,模具和浇注温度越高,则凝固时间越长,且模具温度的影响要大于浇注温度的影响;在保证铝液完全充填型腔的前提下,充分考虑了模具的使用寿命和铝合金熔化温度的要求,进行了模具温度和浇注温度的优化;采用复合加载来代替简单加载可以有效地提高制件密度,使零件性能趋于均匀化。
Thin wall aluminum alloy shells have been widely used in industry, but their fabrication processes have not been evolved for a long time. In this paper, liquid die forging is simulated to form this kind of shells. Anycasting software was used to simulate the process of cavity filling of aluminum alloy shell, and DEFORM-3D is used to simulate the process of plastic deformation. At the same time, complex loading was extracted to promise the component＇s mechanical properties. The results show that the higher the die temperature and pouring temperature is, the longer the solidification time will, and influence by die temperature is greater than that by pouring temperature. Considering the operating life of die and the request of melting aluminum alloy, the die temperature and pouring temperature was optimized based on the cavity filling fully. The method of complex loading is effective on increasing the density of shell, which uniform its mechanical properties.
出处
《塑性工程学报》
EI
CAS
CSCD
北大核心
2007年第4期76-81,共6页
Journal of Plasticity Engineering
关键词
铝合金
薄壁壳体件
液态模锻
数值模拟
复合加载
aluminum alloy
thin wall shell
liquid die forging
numerical simulation
complex loading
